1. lead to obesity and metabolic diseases: junk food usually contains high calories and fat, and excessive intake will lead to weight gain and obesity. Obesity not only affects physical appearance, but also increases the risk of metabolic diseases such as heart disease, diabetes and hypertension.
2. Increase the risk of cardiovascular disease: junk food with high salt, high fat and high sugar will lead to an increase in blood cholesterol level and increase the risk of cardiovascular disease.
3. Affect the immune system function: junk food usually lacks necessary vitamins and minerals. Excessive intake will affect the immune system function, reduce the body's resistance, and be prone to diseases.
4. Causes digestive system problems: junk food usually lacks substances such as cellulose, and excessive intake can easily lead to constipation and other digestive problems.
5. Impact on mental health: Sugar and fat in junk food can promote dopamine secretion in the brain, thus creating a sense of pleasure. However, this feeling is temporary, and excessive intake of junk food will lead to mood swings, anxiety and depression.
In order to keep healthy, we should reduce the amount of junk food, eat a moderate amount of nutritious and balanced food, try to choose healthy foods such as fruits, vegetables and whole grains, and maintain a proper weight and physical condition.